Dude RROD has nothing to do with pre moddding it's just that you had good luck. And this is a very good sale and as its a falcon it is less prone to RROD . I am using the same model myself from the past year no probs at all and i play for like 4-5 hours everyday and sometimes even more. Good Luck
dude the fans at the back r sufficient if u have an xbox mfg 2008 otherwise just add a cpl 120's on the back and cut the chassis (youtube for one fan to put the air on gpu youre good to go and yes nyko is shit .